This week, Janet Yellen is the star of the show at the Economic Policy Symposium in Jackson Hole, Wyoming. That's where central bankers from all over the world converge to talk monetary policy...and possibly fly fishing techniques.

There aren't expected to be any major surprises from Yellen this year. The Federal Reserve is expected to stay its course with lots of stimulus and low interest rates.

"Quantitative easing" is the Fed's now-famous policy of pumping billions of dollars a month into the U.S. economy. When the Fed first started the practice, central banks around the world voiced concern. But now Stone says Europe looks poised to take similar measures.